1. Fujian Institute of Research on the Structure of Matter; Chinese Academy of Sciences; Fuzhou Fujian 350002 P. R. China
2. Xiamen Institute of Rare Earth Materials, Haixi Institute; Chinese Academy of Sciences; Xiamen 361021 P. R. China
3. Pharmaceutical Analytical & Solid-State Chemistry Research Center; Shanghai Institute of Materia Medica, Chinese Academy of Sciences; Shanghai 201203 China